N‐Doping Activated Presodiation Enhances Sodium‐Ion Provision in Hard Carbon Anodes
Hua Lin, Wenxing Miao, Yanrong Shi, Guangyi Mao, Ding Ding, Jian Weng, Zhongxiong Fan, Qingchi Xu, Jun Xu · 2026
Read N‐Doping Activated Presodiation Enhances Sodium‐Ion Provision in Hard Carbon Anodes by Hua Lin, Wenxing Miao, Yanrong Shi, Guangyi Mao, Ding Ding, Jian Weng, Zhongxiong Fan, Qingchi Xu, Jun Xu (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13335756.txt.
Description
Hua Lin and co-authors improved hard carbon anodes for sodium-ion batteries by combining nitrogen doping with presodiation in a 2026 materials study. Hard carbon is the leading anode candidate for these batteries, but it wastes sodium on first charge, dragging down efficiency.
Pyrolyzing a urea-hard carbon composite seeded many pyrrolic nitrogen sites into the material. Those sites grip sodium ions and capture electrolyte anions, helping a stable, inorganic-rich surface layer form during chemical presodiation. The treated anode reached an initial Coulombic efficiency of 98.54 percent and kept 90.6 percent of capacity after 1,000 cycles at a demanding rate in half-cell tests. In full cells, first-cycle efficiency jumped from 70.74 percent to 91.53 percent with the treatment. The design offers battery makers a lever against hard carbon's oldest flaw.
Catalog record
| CREATOR | Hua Lin, Wenxing Miao, Yanrong Shi, Guangyi Mao, Ding Ding, Jian Weng, Zhongxiong Fan, Qingchi Xu, Jun Xu |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 56577 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |